Theo de Raadt has announced the release of OpenBSD 5.2. The OpenBSD 5.2 release page has a detailed list of all changes and improvements. As always, I would love for someone to write proper items about OpenBSD releases - it's outside my interests and cursory glances don't do it justice.

Yes, I have use this method to install OpenBSD 5.1 on my Laptop. You should not need to use -current, just to get full disk encryption.

Did not know that. But from rereading the commit exactly it makes sense. It says though that it is now enabled by default which was not the case before. ("For boot(8) all softraid boot support is now enabled by default, including support for booting from crypto volumes.")